test_fnegx_1:
  #_ REGISTER_IN f4 [3FF0000000000000]
  fneg. f3, f4
  blr
  #_ REGISTER_OUT f3 [BFF0000000000000]
  #_ REGISTER_OUT f4 [3FF0000000000000]

test_fnegx_2:
  #_ REGISTER_IN f4 [BFF0000000000000]
  fneg. f3, f4
  blr
  #_ REGISTER_OUT f3 [3FF0000000000000]
  #_ REGISTER_OUT f4 [BFF0000000000000]

test_fnegx_3:
  #_ REGISTER_IN f4 [0000000000000000]
  fneg. f3, f4
  blr
  #_ REGISTER_OUT f3 [8000000000000000]
  #_ REGISTER_OUT f4 [0000000000000000]

test_fnegx_4:
  #_ REGISTER_IN f4 [4005000000000000]
  fneg. f3, f4
  blr
  #_ REGISTER_OUT f3 [C005000000000000]
  #_ REGISTER_OUT f4 [4005000000000000]